granular cell tumor is a rare benign neoplasm most commonly appears in the head and neck region, especially in the tongue, cheek mucosa, and palate. occurrence in limbs is even rarer. these tumors account for approximately 0.5% of all soft tissue tumors. granular cell tumor can also affect other organs including skin, breast, and lungs. local recurrence and metastasis is potentially higher in m...

OBJECTIVE This study investigates the prognostic value of (18)F-FDG PET/CT qualitative therapy assessment (Hopkins criteria) in patients with head and neck squamous cell carcinomas (HNSCCs) with residual neck nodes after definitive chemoradiation therapy and compares the Hopkins criteria with anatomic nodal size and morphologic features for prediction of survival outcomes. MATERIALS AND METHO...

A drop falling from a faucet is a common example of a mass fissioning into two or more pieces. The shape of the liquid in this situation has been investigated by both experiment and computer simulation. As the viscosity of the liquid is varied, the shape of the drop changes dramatically. Near the point of breakup, viscous drops develop long necks that then spawn a series of smaller necks with e...

Juvenile xanthogranuloma is an unusual, self-limiting dermatological disorder occurring especially in infants, late childhood and rarely in adults. It belongs to the broad group of non-Langerhans cell histiocytosis. It usually appears as solitary or multiple papules, macules or nodules several millimeters in diameter with the head and neck being the most common site of involvement and vulva bei...

Transoral percutaneous endoscopic gas− trostomy (PEG) is not possible in some pa− tients due to difficulty in opening the mouth (e.g., in patients with head and neck cancers, oral submucous fibrosis, dental misalignment, and intermaxillary fixation). Transnasal endoscopy has been used for diagnostic upper gastrointestinal endoscopy and for placement of enteral feeding tubes [1, 2]. However, the...